Wear-resistant fan

Abstract

The utility model discloses a wear -resisting type fan, including fan main part still includes static electricity generating device, static electricity generating device includes: the first electrically conductive part of the impeller electrically conductive of fan main part is given, the second electrically conductive part of fan shell electrically conductive of fan main part is given, the power supply of first electrically conductive part, second electrically conductive part power supply, with control device of fan monitoring system connection of power supply connection. The utility model through first electrically conductive part and second electrically conductive part electrically conductive for the impeller and fan shell, make the outer surface of impeller and the inner surface of fan shell have static electricity, make the outer surface of impeller and the inner surface of fan shell adsorb certain thickness dust layer, resist the dust particle of subsequent come flow, protect the easy wear and tear position of fan, increase fan wear -resisting performance.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a wear-resistant fan. Background Technology

[0002] In steel mills, cement plants, and coal mines, a large number of fans are used for ventilation and dust removal, purifying and recovering dust from the gas, or circulating dust-laden gas.

[0003] Because the gas contains dust, and the fan impeller is a rotating component, particles in the gas impact the impeller blades and the windward side of the fan casing. These particles also rub against the pressure surfaces of the blades and the fan casing in the flow direction. After a period of operation, this alters the blade profile, reducing fan efficiency, increasing energy consumption, and may even damage the blades, wear through the fan casing, and cause operational accidents. Simultaneously, dust accumulates in localized airflow vortices on the blades. Once it reaches a certain level, it can suddenly detach from the impeller, increasing impeller imbalance and potentially causing the unit to shut down due to excessive vibration.

[0004] Currently, common methods to prevent wind turbine wear include localized hardening spraying or applying wear-resistant layers to the surface. However, these methods increase manufacturing costs, and the wear-resistant layers require regular replacement, reducing efficiency. Furthermore, these wear prevention methods still suffer from the aforementioned problem of dust accumulating in localized airflow vortex areas of the blades. When this dust reaches a certain level, it can suddenly detach from the impeller, increasing impeller imbalance and potentially causing the unit to shut down due to excessive vibration. Utility Model Content

[0005] The purpose of this utility model is to provide a wear-resistant fan to address the aforementioned shortcomings and defects of the existing technology and solve the above-mentioned problems.

[0006] The technical problem solved by this utility model can be achieved by the following technical solution:

[0007] A wear-resistant fan includes a fan body and an electrostatic generator, the electrostatic generator comprising:

[0008] A first conductive component that conducts electricity to the impeller of the main body of the fan;

[0009] A second conductive component that conducts electricity to the fan casing of the main body of the fan;

[0010] A power source that supplies power to the first conductive component and the second conductive component;

[0011] A control device connected to the power supply and to the fan monitoring system.

[0012] In a preferred embodiment of this utility model, the fan body includes a fan housing, an impeller, a rotating shaft, and a drive motor. The impeller is rotatably disposed inside the fan housing. The two ends of the rotating shaft are respectively connected to the impeller and the drive motor. The first conductive component includes a brush that contacts and cooperates with the rotating shaft. The brush is connected to a power source through a first wire. The second conductive component includes a conductive element fixed on the fan housing. The conductive element is connected to a power source through a second wire.

[0013] In a preferred embodiment of this utility model, the fan monitoring system is used to monitor the operating status and operating time of the fan, and the control device controls the power supply and power cut-off of the power source based on the operating status and operating time of the fan monitored by the fan monitoring system.

[0014] In a preferred embodiment of the present invention, the rotating shaft is mounted on a bearing housing, and bearing assemblies that cooperate with the rotating shaft are respectively provided at both ends of the bearing housing, and the bearing housing is mounted on a base.

[0015] In a preferred embodiment of this utility model, the power supply is disposed on the base.

[0016] In a preferred embodiment of the present invention, a first protective shell is provided on the outer periphery of the first conductive component.

[0017] In a preferred embodiment of the present invention, a second protective shell is provided on the outer periphery of the second conductive component.

[0018] In a preferred embodiment of this invention, the fan housing is made of a conductive material.

[0019] In a preferred embodiment of this invention, the impeller is made of a conductive material.

[0020] In a preferred embodiment of this utility model, the impeller is mounted on the rotating shaft by a key and a locking nut.

[0021] By employing the above technical solution, this invention conducts electricity to the impeller and fan casing through the first and second conductive components, causing static electricity to accumulate on the outer surface of the impeller and the inner surface of the fan casing. This allows a certain thickness of dust layer to adhere to these surfaces, resisting incoming dust particles and protecting easily worn parts of the fan, thus increasing its wear resistance. When the dust layer reaches a certain thickness in areas where dust easily accumulates due to airflow vortices in the fan impeller, the control device cuts off the power when the fan monitoring system alarms. This causes the dust attached to the outer surface of the impeller to detach from the impeller under the centrifugal force of the rotating impeller, and the thicker dust on the inner surface of the fan casing to fall off under the impact of the airflow. This keeps the overall imbalance of the impeller within a safe operating range for the fan vibration, maintaining equipment reliability, improving equipment safety, reducing maintenance frequency and workload, eliminating downtime losses due to wear, reducing fan manufacturing costs, and improving the safety of fan design. This invention eliminates the need for localized hardening spraying or the use of a wear-resistant layer on the fan surface, further reducing fan manufacturing costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0024] Reference numerals: Fan body 100; Fan housing 101; Impeller 102; First protective shell 103; Rotating shaft 104; Bearing housing 105; Bearing assembly 106; Coupling cover 107; Coupling 108; Drive motor 109; Base 110; Current collector 111; Static electricity generator 200; First conductive component 201; First wire 202; Control device 203; Power supply 204; Second conductive component 205; Second wire 206; Second protective shell 207. Detailed Implementation

[0025] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0026] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0027] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] See Figure 1 The wear-resistant fan shown includes a fan body 100 and an electrostatic generator 200.

[0029] The electrostatic generation system 200 includes a first conductive component 201, a second conductive component 205, a power supply 204, and a control device 203. The first conductive component 201 conducts electricity to the impeller 102 of the fan body 100, the second conductive component 205 conducts electricity to the fan casing 101 of the fan body 100, the power supply 204 supplies power to the first conductive component 201 and the second conductive component 205, and the control device 203 is connected to the power supply 204 and the fan monitoring system (not shown in the figure).

[0030] In this embodiment, the fan body 100 includes a fan housing 101, an impeller 102, a rotating shaft 104, and a drive motor 109. A collector 111 is provided at the air inlet of the fan housing 101. The impeller 102 is rotatably disposed within the fan housing 101. Both ends of the rotating shaft 104 are connected to the impeller 102 and the drive motor 109, respectively. A first conductive component 201 includes a brush that contacts and engages with the rotating shaft 104. The brush is connected to a power supply 204 via a first wire 202, and the electricity on the brush can be conducted to the impeller 102 through the rotating shaft 104. A second conductive component 205 includes a conductive element fixed to the fan housing 101. The conductive element is connected to the power supply 204 via a second wire 206. Specifically, the fan impeller 102 is mounted on the rotating shaft 104 by a key and a locking nut. The fan housing 101 and the impeller 102 are made of conductive materials. For example, the fan housing 101 is a casting, and the impeller 102 is made of high-strength steel, aluminum alloy, chromium-nickel alloy steel, or titanium alloy.

[0031] A rotating shaft 104 is mounted on a bearing housing 105. Bearing assemblies 106 that mate with the rotating shaft 104 are respectively mounted at both ends of the bearing housing 105. The bearing housing 105 is mounted on a base 110, and a power supply 204 is mounted on the base 110. The other end of the rotating shaft 104 is connected to a drive motor 109 via a coupling 108. A coupling cover 107 is mounted on the outside of the coupling 108.

[0032] In this embodiment, the fan monitoring system is used to monitor the fan's operating status and operating time. The control device 203 controls the power supply 204 to supply and cut off power based on the fan's operating status and operating time monitored by the fan monitoring system. Preferably, the fan monitoring system is a commonly used monitoring system in the art, such as the commercially available HYBX-03A fan instrument box vibration and temperature monitor, which is common knowledge in the art. The control device 203 is a commonly used controller in the art, such as a PLC controller. The power supply 204 can provide a voltage below 36V to the first conductive component 201 and the second conductive component 205, or the voltage can be appropriately increased depending on the situation. For example, the power supply 204 can provide 42V. If a higher voltage is used, the equipment needs to be protected against electric shock, such as by providing insulation protection on the entire outer surface of the equipment.

[0033] In this embodiment, a first protective shell 103 is provided on the outer periphery of the first conductive component 201, and a second protective shell 207 is provided on the outer periphery of the second conductive component 205.

[0034] The working principle of this utility model is as follows:

[0035] During operation, power supply 204 supplies power to the first conductive component 201 and the second conductive component 205, which in turn conducts electricity to the impeller 102 and the fan casing 101. The outer surface of the impeller 102 and the inner surface of the fan casing 101 become statically charged, causing a dust layer of a certain thickness to adhere to their surfaces. The formation and thickness of the dust layer are controlled by the output voltage and the duration of power outage. The dust layer formed on the outer surface of the impeller 102 and the inner surface of the fan casing 101 during operation resists subsequent incoming dust particles, protecting the easily worn parts of the fan and increasing its wear resistance. When the dust layer thickness reaches a certain level in areas where dust easily accumulates due to the airflow vortex of the fan impeller, the control device 203 cuts off the power supply 204 when the fan monitoring system alarms. This causes the dust attached to the outer surface of the impeller 102 to detach from the impeller 102 under the centrifugal force of the rotating impeller 102. The thicker dust on the inner surface of the fan casing 101 falls off under the impact of the airflow. This keeps the overall imbalance of the impeller within the range where the fan vibration value can operate safely, maintains the reliability of the equipment, improves the safety of the equipment, reduces the frequency and workload of equipment maintenance, eliminates downtime losses caused by wear, reduces the cost of fan manufacturing, and improves the safety of fan design.

[0036] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0037] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0038] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant fan, comprising a fan body, characterized in that, It also includes an electrostatic generator, which comprises: A first conductive component that conducts electricity to the impeller of the main body of the fan; A second conductive component that conducts electricity to the fan casing of the main body of the fan; A power source that supplies power to the first conductive component and the second conductive component; A control device connected to the power supply and to the fan monitoring system.

2. The wear-resistant fan according to claim 1, characterized in that, The main body of the fan includes a fan housing, an impeller, a shaft, and a drive motor. The impeller is rotatably disposed inside the fan housing. The two ends of the shaft are respectively connected to the impeller and the drive motor. The first conductive component includes a brush that contacts and cooperates with the shaft. The brush is connected to a power source through a first wire. The second conductive component includes a conductive element fixed on the fan housing. The conductive element is connected to a power source through a second wire.

3. The wear-resistant fan according to claim 1, characterized in that, The wind turbine monitoring system is used to monitor the operating status and operating time of the wind turbine. The control device controls the power supply and power cut-off based on the operating status and operating time of the wind turbine monitored by the wind turbine monitoring system.

4. The wear-resistant fan according to claim 2, characterized in that, The rotating shaft is mounted on a bearing housing, and bearing assemblies that cooperate with the rotating shaft are respectively provided at both ends of the bearing housing. The bearing housing is mounted on a base.

5. A wear-resistant fan according to claim 4, characterized in that, The power supply is located on the base.

6. The wear-resistant fan according to claim 1, characterized in that, The first conductive component is provided with a first protective shell on its outer periphery.

7. A wear-resistant fan according to claim 1, characterized in that, The outer periphery of the second conductive component is provided with a second protective shell.

8. A wear-resistant fan according to claim 1, characterized in that, The fan casing is made of a conductive material.

9. A wear-resistant fan according to claim 1, characterized in that, The impeller is made of a conductive material.

10. A wear-resistant fan according to claim 1, characterized in that, The impeller is mounted on the shaft by a key and a lock nut.

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